[bug 920099] Don't send badge award emails on stage

This adds some code that prevents STAGE=True environments from sending
email from badge awards. Why? So everyone doesn't get spammed by badges
getting awarded on -stage.

Right now that covers -dev and -stage environments. settings.py defaults
STAGE to False, so -prod and developer environments will continue to
send notification emails when badges are awarded.
[Bug 849121] Try to stop non-AAQ locale questions.

* Removes the language switcher on AAQ pages.
* If the user manually changes languages via the url, redirect them back
  to English and show a warning.
* Set the entire AAQ to be noindex.
[Bug 884776]Validated KPI Dashboard
[Bug 884780]Validated Profile Page
[bug 920456] Fix and refactor mobile get involved signups.
[bug 912563] Make canned responses more discoverable
[bug 920470] Require SSL during entire AAQ workflow.
Fix @ssl_required to look at SESSION_COOKIE_SECURE

Instead of triggering on DEBUG=False, it now triggers on
SESSION_COOKIE_SECURE=True.
[bug 910889] Style the award notification email
Update selenium from 2.33 to 2.35
Add SELENIUM_FIREFOX_PATH for sad-path environments

I have Firefox Nightly earlier in my path than Firefox stable. Nightly
has problems with Selenium that haven't been fixed, yet, (or something
like that). This allows me to specify exactly which Firefox binary to
use without having to fiddle with my PATH environment variable which
caused other problems because of virtual environments and such.

It defaults to exactly what happened before, so if it worked for you
before, you should see no change with this change.
Add age filter default for questions to the search docs.
[Bug 618599] Localize the avatar content
[bug 916813][bug 916818] Implement KB and L10n automatic badges.
[bug 916820] Implement Army of Awesome badge.

Awarded on 50 reply tweets.
[bug 921022] Implement Support Forum Badge.

Awarded to users with 30+ answers in a given year.
Make get_or_create_badge() awesomer.
Command for awarding badges from 2010-2013.
Add temporary cron job to award badges today at 2:30pm PDT.
I fail at crontab. Trying 3:07pm PDT now.